Sawmill-dog handling and operating mechanism



.'iuiy 8 1924.

J. C. ADAMS sAwMILL Dos HANDLING AND OPERATING MEcHANIsM www4 Filed July 13 '1922 2 Sheets-Sheet l imam@ 2 Shasta-Sheet 2 Md E L o: n.014

Juny 8 1924.

J. C. ADAMS SAWMILL DOG HANDLING AND OPERATING MECHANISM Filed July 13 'I 922 Patented July 8, 1924a Sl' T E JAMESC. ADAMS, 0F MCGLL, `SOUTHlGARQllIlQA. I, j

SAWMILL-DDG HANDLING AND1 OPERATINGHMEGHNI/SM.

application inea muyy is,

To YaZZwwm t may cof/warn:

Be itknownthat LJAMnsC. ADAMS, a citizen of the. United States, .residing at Mc- Coll, in the county of Marlboro and State ofy South'A Carolina, have invented certain new and useful.Improvementsin a Sawmill- Dog)V Handling and Opera-tingV Mechanism, of' which the following is a` specification.

The present invention relatesV to a sawmill dog and has for its principal object to proivi de a mechanism whereby the dog may be lifted and" adjusted with considerable ease.

Another important object of the invention is. to. providel means forv rotating thedog as the sameis being lifted. or lowered.

Another important object of the` invention isto providea vertically'a'djusted fulcrum device for the doglifting'lever.

A still. further object of the.l invention is to produce a sawmill dog of thislnature Vprovided.. .with a regulating mechanism which will be efficient,vl reliable in operation, du'- rable, comparatively,inexpensive to manufacture, and well adapted to the purpose for which it is designed.

With the above and: numerous other objects in View as will appear as the description progresses, the invention resides in certain novel features of construction, and the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing Figure 1 is an elevation of the mechanism embodying my invention,

Figure 2 is a top plan thereof,

Figure 3 is a detailed elevation of the fulcrum adjustable mechanism,

Fi 1re 4 is a detailed vertical section through the dog itself,

Figure 5 is a detailed section taken substantially on the line 5-5 of Figure 1, and

Figure 6 is a detailed section taken substantially on the line 6 6 of Figure 4.

Referring to the drawing in detail it will be seen that 1 designates the dog which is provided with the body 2 having situated on the lower end thereof the prongs or teeth 3 which are adapted to engage the lo in a manner well understood by those skil ed in this art. A vertical extension 4 is provided on the upper end of the dog which includes a beveled gear 5 either keyed theretoor formed integral therewith. A journal bracket 6 extends horizontally from the sleeve 4 and is provided with the journals 11922: SerialfNo. 574,702;

l-.which support a1 shaft 8 upioir which is mounted.V a 'beveled gearA 9lmeshing; `With the. beveled. gear 5;. A. bar .v 10 lextends?v verf tically throughther body 21 andthe extension 4.* 'I he1sleeveg4y is disposedaboutthe extension. 4so that the dog: may bef rotated; The sleeve--is yprovided withtheJti-'unnions 11. Y Y j Y A suitable support 13 has lmounted thereon; a. fu'lcrum` mechanism which; includes a frameconsisting of1 the standards-14 which V are@ vertically disposed and are:l attached at their lower ends to a plate 15 resting; on thesupport 13 -andraty their upper-ends support a plate 15.Y VA pair yof oppositely threaded shafts116 arejournaledy between the plates-15 and15f.v` A. pair ofsleeves 17 j are mounted on the shafts 16,v one on each,

and; are, provided withA internal opposite threads for Ico-operatingfwith thefthreadsV on the .shafts 16. Theshafts 16 have; mounted at their upper endsthe-meshing gears. 18 anda crank--19..-isa provided on the.V` terminal of one of. the: shafts 16. so that upon' rotation thereof both of the shafts will berotated iny opposite directions'` toeach `other .thereby causing the-sleeves 17 tQmOveyupwardly or downwardly. As is shown to advantage in Figure 5 a pin 2O provided with threaded ends is enga-ged with the sleeves and prevents their rotation. A lever 21 is fulcrumed on the pin 20 and it will there-V cruming the lever 21 it will be seen that theV dog may be raised vertically and the pin 11 will be allowed to slip in the slots of the plates 24 thereby preventing the dog from moving in the arc of a circle.

A post 25 is vertically situated adjacent the free endl of the lever 21. A shaft 26 is journalled in the brackets 27 mounted on the lever and is connected to the shaft 8 b theJ universal joint 28. The end of the sha 26 has mounted thereon a wheel or roller 29 which may be engaged with the post 25 or disengaged therewith. When the roller is engaged with the post and the lever fulcrumed it will be seen that the dog will be rotated through the intermediacj7 of the `shafts Q6 and 8 andthe cog wheels 9 and 5.

The lever 21 is preferably formed of some slightly yieldable material so that the vtree end thereof' may be slightly distorted so as to engage or disengage the wheel 29with the post 25 or this lever could, it preferred, be made rigid and sufficient play be provided at the fulcrum point of the 4lever with the `pin 20;" This, however, is merely a mechanicafleXpedient whichY can be varied to suit the ymaterial .being used and other circumstances, ',Th'e foregoing description and the aocompanyingdrawings merely disclose the preterred structure, 'ot' m v invention and it is to 'be `ifinderstood that numerous changes in the details of construction and in the lcombination and' arrangement of parts may be resorted towithout departing from the spirit ot' the inventionas hereinafter claimed;

" Having vthus described my invention what Iclaimas new is "11', llnfeombinatiom a sawmill dog, a-lever forraisingand lowering the sawmill dog, said sawmill dog beingmounted rotatably on Vone end of the lever,a post situated ad'- i jacent the other end 4ot' the lever, a shaft rotatable on' the lever, a wheel on the shaft adapted to be placed in 'andout of engage- Y meut with the post for rotation thereof upon movement ofthe lever, and means'actuated by theshaft for rotating the sawmill dog.

2. In combination, a sawmill dog, ar lever,

a fulcruming device for the lever, means for raising and lowering the ulcruming device, Y said sawmill dog rotatably mounted on one end or the lever, and means for rotation of the sawmill dog upon actuation of the lever in the manner and for the purpose specified. ln combination, a sawmill dog, a lever torraising and lowering the sawmill dog, said sawmill dog being rotatably mounted on one end of' the lever, a beveled gear keyed to the sawmill dog, a second beveled gear for actuating the first beveled gear, a shaft 'for the second beveled gear, a second shaft rotatably mounted-on the lever, a universal. joint connecting the two shafts, a post situated adjacent the free end ot the lever, a whe-el disposed on'` the end ot the second shaft and adapted to be placed in engagement with the post so as to rotate the shaft for rotation ot the sawmill dog through the intermediacy of the beveled gears upon actuation'of the lever in the manner and j, JAMES o. ADAM'S."

Witnesses: I

W. H. HUBBARD, J. L. BUSCH. 

